1. World Health Organization. WHO coronavirus disease (COVID-19) dashboard with vaccination data. (2023). Accessed. April 23, 2023: https://covid19.who.int/.
2. Government of Kerala. GoK dashboard|official Kerala COVID-19 statistics. (2020). Accessed. April 23, 2023: https://dashboard.kerala.gov.in/covid/index.php.
3. WHO Coronavirus. (2020). Accessed. November 22, 2022: https://www.who.int/health-topics/coronavirus.
4. Epidemiology of COVID-19;Bulut C;Turk J Med Sci,2020
5. COVID-19. treatment guidelines for Kerala state version. (2021). Accessed: November 26, 2022: https://dhs.kerala.gov.in/wp-content/uploads/2021/04/Guidelines-Treatment-Protocol-April-2021-merged.pdf.